100fps+ down to 18fps in the Rift???

I’m getting terrible performance ever since 4.3 and up. Still using 4.2.1. I’ve posted here and can’t get a decent answer as to why the move from 4.2.1 to 4.3-> cuts my frame rate in half. I’ve tried EVERYTHING, every optimization trick on these boards, tried all versions of runtime, and yes I can get it back up to near 60 fps but the quality suffers HORRIBLY. 4.2.1, I would switch to FXAA and the build would run at 60 fps and look great. No other tweaks needed. I’m hoping Unity 5 will be more VR friendly. Unity builds always seem to run great in VR.